Week 11

Mechanical Design, Machine Design

April 2022

About the Class

The local class was all about force transmission: joints, ball bearings, gears, belts, chains and cams. Without realizing, we already employed a lot of these techniques when building the 'Almost useless machines' back in November 2021. Watch the video to find out more about it:

Further Links

Mechanical Design
vendors
  McMaster-Carr
  Stock Drive Products
  Amazon Industrial
  Misumi

principles
  stress-strain
  stiffness, strength, hardness
  Maxwell criterion
  moduli
  elastic, plastic flow
  friction
  spalling
  hysteresis
  backlash
  force loops
  elastic averaging
  kinematic coupling

materials
  plastic
  metal
  rubber
  foam
  garolite
  wood
  cement
  ceramic

adhesives

fasteners
  nuts
  bolts
  washers
  heat-set inserts
  rivets
  pins

framing
  metal
  plastic
  t-slot
  self-aligning

drive
  gears involute cycloidal helical herringbone
  planetary
  rack and pinion
  sprockets
  belts
  chains
  shafts
  rods
  nuts
  threadless
  harmonic

guide
  shafts
  rails
  slides

couplers
  shafts
  joints

bearings
  ball
  thrust
  linear
  rotary
  sleeve
  pillow blocks
  skateboard

rotary
  wheels
  pulleys
  casters
  omni OmniBot

lubricants

cables
  ties
  hook and loop
  carriers
  wire
  fiber

liquids
  pipe
  tubing
  fittings
  pumps

conveyors

springs

mechanisms
  flexure, stage
  series elastic
  linkage
  movements
  whippletree
  pantograph
  deltabot
  hexapod
  CoreXY
  Sarrus
  SkyCam
  Hoberman
  Strandbeest

group assignment
  - design a machine that includes mechanism+actuation+automation+application
  - build the mechanical parts and operate it manually
  - document the group project and your individual contribution

Machine Design
machines, modules, objects, video
mechanisms
structural loops, error budgets, specifications
sensors, actuators
end effectors
power electronics
real-time networks
paths
  static, dynamic
motion control
  open-loop, closed-loop
control theory
  bang-bang, PID, acceleration, model predictive, online optimization
timing
  broadcast, time-stamp, handshake, back-pressure
machine control
  virtual, dataflow, video
file formats, interpreters
user interface
path planning
design representation
OpenBuilds, RobotShop, ODrive
Stepper Online, Just Motion Control, Wantai, Oriental Motors, custom
Pololu, Synthetos, Replicape, RAMPS, Marlin, Duet3D, cncjs, FabMo
Satshakit, fab-step, fabstep-i2c
MTM, Clank, Jubilee, Fellesverkstedet, Fab-Machines, Urumbu
Shaper, Handibot, FabLight, Bantam Tools, Ultimaker, Formlabs
Joseph, Simone

group assignment
  - actuate and automate your machine
  - document the group project and your individual contribution